fix TODO(karalabe): Currently updating the inclusion block of a blob needs a full db rewrite. Can we do without?

Author: mask-pp

core/txpool/blobpool/limbo.go

@@ -38,7 +38,6 @@ type limboBlob struct {
 // blobs until they are finalized. The purpose is to support small reorgs, which
 // would require pulling back up old blobs (which aren't part of the chain).
 //
-// TODO(karalabe): Currently updating the inclusion block of a blob needs a full db rewrite. Can we do without?
 type limbo struct {
 	store billy.Database // Persistent data store for limboed blobs